#273FA6#273FA6

#273FA6 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.168 H 268.0°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#273FA6
RGB	rgb(39, 63, 166)
HSL	hsl(229, 62%, 40%)
HSV	hsv(229, 77%, 65%)
CMYK	cmyk(76.5%, 62%, 0%, 34.9%)
CIE-LAB	lab(31.20, 28.53, -58.01)
CIE-LCH	lch(31.20, 64.65, 296.19°)
OKLab	oklab(41.79% -0.0058 -0.1677)
OKLCH	oklch(41.79% 0.168 268)
XYZ	xyz(9.4948, 6.7385, 36.8693)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#273FA6 #A68E27

analogous

#277FA6 #273FA6 #4E27A6

triadic

#273FA6 #A6273F #3FA627

tetradic

#273FA6 #A6277F #A68E27 #27A64E

square

#273FA6 #A6277F #A68E27 #27A64E

split-complementary

#273FA6 #A64E27 #7FA627

monochromatic

#101943 #1B2C74 #273FA6 #3A56D1 #6B81DC

Accessibility & contrast

On white

8.94

#273FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#273FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #273FA6

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##273FA6	#FFFFFF	#000000	##FFFFFF
##273FA6	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0044A4

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #273fa6;
/* rgb */ color: rgb(39, 63, 166);
/* oklch */ color: oklch(41.8% 0.168 268.0);

Tailwind

colors: {
  custom: {
    50: '#7573c1',
    500: '#273fa6',
    950: '#000000',
  },
}

SCSS

$custom: #273fa6;
$custom-light: #7573c1;
$custom-dark: #000000;

JSON

{
  "hex": "#273fa6",
  "rgb": {
    "r": 39,
    "g": 63,
    "b": 166
  },
  "hsl": {
    "h": 228.661,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41793,
    "c": 0.16776,
    "h": 268
  },
  "luminance": 0.0674
}

Semantic roles & 50–950 ramp

primary

#273FA6

secondary

#C3B166

accent

#C643E5

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #273FA6

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →